Missing Value using HashMap and StringTokenizer

Question

class StringToken
     String Message = "a b Germany";
     HashMap <String,String> map;
StringTokenizer token;
     public StringToken()
          try
          token = new StringTokenize(Message);
               map = new HashMap <String,String>();
               map.put("a","Adelaide");
               map.put("b","Auckland");
while (token.hasMoreToken())
                    System.out.print (map.get(pesan.nextToken())+" ");          
          catch(Exception e)
     public static void main(String[] args)
          new StringToken();
The output like this :
Adelaide Auckland null
What i want like this:
Adelaide Auckland Germany
The problem is,How to display all value of Message? cos There's no Germany key..i want to make some condition like this, if there's no key in the Hashmap, the value still displayed originally..
At my code the problem is, if there's no key in hashmap,output wont display the word..
Thanks Guys...

Answer 1

Two options:
1) Instead of
System.out.print(map.get(pesan.nextToken()));do
String token = pesan.nextToken();
String value = map.get(token);
if (value==null) value = token;
System.out.print(value);2) Implement a new Map which provides this behavior.
Cheers